APA

Combs C. C., . (2003). Terrorism in the twenty-first century. Upper Saddle River (Nueva Jersey, Estados Unidos): Prentice Hall.

Chicago

Combs Cindy C, . 2003. Terrorism in the twenty-first century. Upper Saddle River (Nueva Jersey, Estados Unidos): Prentice Hall.

Harvard

Combs C. C., . (2003). Terrorism in the twenty-first century. Upper Saddle River (Nueva Jersey, Estados Unidos): Prentice Hall.

MLA

Combs Cindy C, . Terrorism in the twenty-first century. Upper Saddle River (Nueva Jersey, Estados Unidos): Prentice Hall. 2003.